1749 Telamon

Trojan asteroid June 2018 yes 1749 Telamon #C2FFFF 23 September 1949 K. Reinmuth Heidelberg Obs. (1749) Telamon 1949 SB1941 BP1966 CN Telamonian ˈ t ɛ l ə m ɒ nNoah Webster (1884) A Practical Dictionary of the English Language Telamon(Greek mythology) Jupiter trojanGreekbackground 23 March 2018 (JD 2458200.5) 0 68.67 yr (25,081 d) 5.7006 AU 4.5987 AU 5.1497 AU 0.1070 11.69 yr (4,268 d) 189.63° 0.0843 ms / day 6.0943° 340.87° 113.06° 0.3162 AU 2.9770 64.90 0.67 km69.14 4.57 km81.06 7.0 km 16.975 0.001 h 0.0562 0.0110.073 0.0110.078 0.011 D (SMASS-I)D (SDSS-MOC)D Pan-STARRS 9.209.4 1749 Telamon ˈ t ɛ l ə m ɒ n is a dark Jupiter Trojan from the Greek camp, approximately 70 km mi off 2 us in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg Observatory on 23 September 1949, and named after Telamon from Greek mythology. The D-type asteroid is the principal body of the proposed Telamon family and belongs to the 60 largest Jupiter trojans. It has a rotation period of 17.0 hours and possibly a spherical shape. Classification and orbit Telamon is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's Lagrangian point, 60° ahead of the Gas Giant's orbit in a 1:1 resonance (see Trojans in astronomy). It orbits the Sun at a distance of 4.6–5.7 AU once every 11 years and 8 months (4,268 days; semi-major axis of 5.15 AU). Its orbit has an eccentricity of 0.11 and an inclination of 6° with respect to the ecliptic. The body's observation arc begins at with its first observation as 1941 BP at Turku Observatory in January 1941, more than 8 years prior to its official discovery observation at Heidelberg. Telamon family Fernando Roig and Ricardo Gil-Hutton identified Telamon as the principal body of a small Jovian asteroid family, using the hierarchical clustering method (HCM), which looks for groupings of neighboring asteroids based on the smallest distances between them in the proper orbital element space. According to the astronomers, the Telamon family belongs to the larger Menelaus clan, an aggregation of Jupiter trojans which is composed of several families, similar to the Flora family in the inner asteroid belt.9,10 However this family is not included in David Nesvorný HCM-analysis from 2014. Instead, Telamon is listed as a non-family asteroid of the Jovian background population on the Asteroids Dynamic Site (AstDyS) which based on another analysis by Milani and Knežević. Physical characteristics Telamon is a dark D-type asteroid according to the SDSS-based taxonomy and the surveys conducted by SMASS (Xu) and Pan-STARRS. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Telamon measures between 64.90 and 81.06 kilometers in diameter and its surface has an albedo between 0.046 and 0.078. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0469 and a diameter of 80.91 kilometers based on an absolute magnitude of 9.4. Lightcurves Photometric observations of Telamon by Stefano Mottola from August 1995 were used to build a lightcurve rendering a rotation period of 11.2 hours with a brightness variation of 0.1 0.01 in magnitude (U=2). In October 2010, another observation by Robert Stephens at the Goat Mountain Astronomical Research Station G79 in California gave a period of 16.975 hours (U=3-). In August 2017, observations by the K2 mission of the Kepler spacecraft during Campaign 6 gave two periods of 11.331 and 22.613 hours with an amplitude of 0.06 and 0.07 magnitude, respectively (U=2/2-). The body is possibly of spherical shape as all lightcurves measured a very small variation in brightness. Naming This minor planet was named by the discoverer after Telamon, from Greek mythology, who was an argonaut searching for the Golden Fleece, and father of Ajax and Teucer, after whom the minor planets 1404 Ajax and 2797 Teucer are named. Telamon banished his son Teucer (as he had been banished by his own father) when he returned home from the Trojan war without the remains of his brother. The official 1749 naming citation was published by the Minor Planet Center on 15 February 1970 (M.P.C. 3023). References 30em 2016-08-03 last obs. JPL Small-Body Database Browser: 1749 Telamon (1949 SB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001749 Jet Propulsion Laboratory 8 June 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 139 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1750 (1749) Telamon 1749 Telamon (1949 SB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1749 8 June 2018 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S List of Jupiter Trojans Minor Planet Center 30 May 2018 https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html 5 June 2018 T. Grav A. K. Mainzer J. M. Bauer J. R. Masiero C. R. Nugent November 2012 WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy The Astrophysical Journal 759 1 10 2012ApJ...759...49G 10.1088/0004-637X/759/1/49 1209.1549 119101711 (online catalog) Asteroid (1749) Telamon – Proper elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=1749&pc=1.1.6 19 October 2019 F. Roig A. O. Ribeiro R. Gil-Hutton June 2008 Taxonomy of asteroid families among the Jupiter Trojans: comparison between spectroscopic data and the Sloan Digital Sky Survey colors Astronomy and Astrophysics 483 3 911–931 2008A&A...483..911R 10.1051/0004-6361:20079177 free 0712.0046 118361725 D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 119280014 Asteroid 1749 Telamon Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1749+Telamon 8 June 2018 12 June 2018 https://web.archive.org/web/20180612141539/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1749+Telamon dead J. M. Carvano P. H. Hasselmann D. Lazzaro T. Mothé-Diniz February 2010 SDSS-based taxonomic classification and orbital distribution of main belt asteroids https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_I0035_5_SDSSTAX_V1_1/data/sdsstax_ast_table.tab Astronomy and Astrophysics 510 12 2010A&A...510A..43C 10.1051/0004-6361/200913322 30 October 2019 free (PDS data set) E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 17 October 2019 1749 8 June 2018 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 (online, AcuA catalog p. 153) 6 Stefano Mottola Mario Di Martino Anders Erikson Maria Gonano-Beurer Albino Carbognani Uri Carsenty Gerhard Hahn Hans-Josef Schober Felix Lahulla Marco Delbò Claes-Ingvar Lagerkvist May 2011 Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects The Astronomical Journal 141 5 32 2011AJ....141..170M 10.1088/0004-6256/141/5/170 free Linda M. French Robert D. Stephens Susan M. Lederer Daniel R. Coley Derrick A. Rohl April 2011 Preliminary Results from a Study of Trojan Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..116F The Minor Planet Bulletin 38 2 116–120 1052-8091 2011MPBu...38..116F 20 December 2016 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 53493339 20 December 2016 Erin Lee Ryan Benjamin N. L. Sharkey Charles E. Woodward March 2017 Trojan Asteroids in the Kepler Campaign 6 Field The Astronomical Journal 153 3 12 2017AJ....153..116R 10.3847/1538-3881/153/3/116 125570438 free 6 Gy. M. Szabó A. Pál Cs. Kiss L. L. Kiss L. Molnár O. Hanyecz E. Plachy K. Sárneczky R. Szabó March 2017 The heart of the swarm: K2 photometry and rotational characteristics of 56 Jovian Trojan asteroids Astronomy and Astrophysics 599 13 2017A&A...599A..44S 10.1051/0004-6361/201629401 free 1609.02760 119275951 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1749 1748 Mauderli 1749 1750 Eckert 001749 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19490923